Tbimming and cleaning attachment fob machines eoh sewing looped



I A. L. TRAVER. TRIMMING AND CLEAN NG ATTACHMENT FOR MACHINES FDR SEWING L-OOPED FA APPLlCATlON HLED DEC. 1. 191B.

Patented Nov. 6, 1917 I 3 s EET HE amcs.'

* T 7 I 'v vwm 1E I J tot d f/ 37 M j A. L. TRAVER. TRIMMING AND CLEANING ATTACHMENT FOR MACHINES FOR SEWING LOOPED FABRICS.

' 1 APPLICATION FILED 05c. 1916.

Patented Nov. 6, 1917.

-3 SHEETS-SHEET 2.

A. L. T'RAVER. TRIMMING AND CLEANENG ATTACHMENT FOR MACHINES FOR SEWING LOOPED FABRICS.

APPLlCATlON FILED DEC. L-IQIS.

a5 'gni isc' Tiisiiizz' ADELBERT L: @RAVER, oF l -l ILMbNT ltfiw Y oItK i'RiMivimG AND 'dLEANING iitiwiiirfhsj 1 81i FABRICS. if l" w Bjitthat L'ADELBERT L; TRA'vjtR, a citizen of the United' 'states, residing at Philmont, in the c'o'urlty of Coluinhiti and State of New Y rk, have invented certain new and useful Improvements in ahdCleani g Attachfnents for Machines for Sewing- Lobpd' Fabrics? and I do declai e the fchowing to be a tu'll, clear; and exact d'sc'riptibn of the i'ilvention, lsuch as will enable others skilled in the aft t6 which it aple 'rtains to' r'r ieke an'i'hse the same? This iiitenti o relates foo a 'trifh'rhi'ng and cleafiiii'g attachmen'tjfoi" use hrise'ztmiiig or lohpin g' ma'chi ri'es 'afid which is I especially dsighedtb be appliedft'o the ihtchihe shown and described in' Letters Patent N61 1,054,724, dated-Marthe 1913.

The main object ot'the' invention is m prdvide a simple ma eflit'ient attachment of fthis ch zirzi fiter' i'nf which the seainis of hesi'ry aih'tl "khit underwear fcr-medfronil'obped ished article.

yiett which .'will appear as the desci ip tioh ceisiiig carrying-leve Inthe en'ibodiine'iitillustrated, the attaclimnt' constitutir'ig this invent-ion compfisesa brackefi l which is bol-tedto the head of ajm'achine for sewing looped ffzthiflic'shthe"dethiis'cf which are set forth i n Iiette'f's*Pettiitebove r'efe'i'redto. The heed H is supported by an arm A of-theframe F (if the'mttchine androtatable 0 said head hhlt -p'ifllfey'p eati'ied thereby. I I F The biecket 1' has an' upstanding Stud" 2 at" its upper ehd and laterally extending a hGriZhmI he'ft S- which is driven by a aperture d fets atits ldtter end with a bait Opening- '4 disposed" ce'nti'jally between therir.

These feet? are arranged in the forth of a l owi e'i ftc'e'of'said feet to pro vide -fcr' adjust'mnt of the trimmer to the proper angle stiitab'le tdthe ring or" cylinderC in connectfOtl with which it is used.' These; adjiisting elements 5' are preferably in the f o'rmtf s rews and afldid practically a ul'iivje'isa l adjfistifiefitfcr th'devic, 1 1

or crane 13 and a shaft 1'4 is-rotatably and slidably mounted in said eye and in a hearing 15 farmed on the crane 13'in'al'inenient Y ti'v'ely clean said bristles of waste and pre- A lever 16 is fixed to the shaft 14 and has adepending knife'c'arry-ing arm 17 provided tom-by a removableplate 24 which affords with the eye terminal 9.

with a laterally extending foot 18 in which is fitted a flat trimming knife 19. This knife is detachably connected with'said, foot -being shown clamped. between the upper face of said foot and a plate 20 held to said foot by screws 2.1 with-the knife arranged-between said screws. This knife extends inwardly at right angles to said foot and has a beveled cutting edge 22 at its free end with a finger 2-3 fpromoting longitudinally at the rear thereo said knifecooperating with a stationary knife'to be'describ'edh 1 A gear casin 24 is carried-by the forked end of the Y-s aped arm 6,- one branch 6 thereof being hingedly connected at its free end to oneside of the-casing and the free end of its other branch 6 having an eye 6- through which an adjusting screw 25 extends :and engages a threaded socket26 at the side of the casing 24 diametrically op posite its hin ed connection with branch 6?. Two screws 2 extend through the-side walls of the eye 6- for locking arm 6 tojsaid adjustingscrew 25. i r The gear casing 24 has-an upwardly projecting tubular stem .26 through which passes-an oscillating shaft. 27 'having fixed thereon within said casing a bevel-gear. 28.

A bevel pinion 29z mesheswiththe gear 28 and is fixed to a rotatable brush-carrying shaft 30 which extends transversely of the casing 24 and is supported inbearingsi31 and 32 carried by the outer face of the'casing at diametrically opposite points. One end of the shaft 30 has a collar-3'3 secured thereto by a set screw while its other end projects beyond the casing, and carries; a cleaning brush 34 which is detachably fixed to said shaft end, which latter is reduced to receive the -hubv.3'5 of the brush which is clamped on the shaft between a shoulder 36 formed at the innerend of its reduced portion and a, shoulder 37 on a'thumbscrew 38 which is screwed into a threaded socket in the end of said shaft 30 whereby the brush is fixed to turnwith the shaft- A washer 38 is arranged between said shoulder '37 and said brush hub; i t t I The bearing 32., through which thebrush carrying; end of. shaft 30 projects, is ex tended to receive the hub 3920f a hood 40 whi h" partially-incasesand protects the brush: 34, said .hub being shown secured to saidbearing bya set screw=39f The stops. at as here shown "r'n-rz'zular so that they will'effecthereof.

e t cl 24 is shown closed on its botaccess to the interior of the casing and protects the gears from-dust and the like. Suitably fixed to the upper end of shaft 27- =is a lever 43 of the first class which is connected atone end by a link 50 to lever 16 and at its other end by a universal joint v44 to operating rod ,45. This rod 45 is also eccentrically connected by a universal joint 46 toa rotatable disk 47 centrally fixed to the driving, shaft S of the .sewingmachine so that onrotation of said shaft oscillatory movement :willbedrnparted to lever 43 and through link-.50 .tolever 16 for the simultaneous working of the brush. 34 and knife 19. Loosely mounted on shaft 14 between veye Qggand lever 164s a collar-48 formed with Iiibs 49adapted to work upon the ed e of the eye terminal 9 for lifting the nife carrying love-r116 apredeterrnined distance, the nibs 49 being designed to engage notches 51 formed in the eye terminal 9 which permits the lowerin of the-knife 19 and the locking of the co lar against turning. ,An operating handle 48 extends laterally from said collar. The knife is held in lowered position through the medium of a coiled ex-L pansion. spr1 ng=52 surrounding shaft 14 be tween the upper face of lever 16 and the bearing 15 of the crane 13.

, Atzone sideofthe bracket 1 is adjustably connected a foot 53 supporting a guide plate v 54 which is. arranged vertically at one side of the knife 19 and is shaped as shown'to deflect-the trimmings SFWBI'Bd by the knife from: the looped. fabrics which are stitched together during the operation of t e machine, it bei'ng understood that the point cylinder G has a step-by step movementimparted-to it while the machine is in op eration. i

V The foot 53 is formed with a bifurcation 55 in which engages a threaded stud 56 carriedby-bracket 1, thelatter being provided with a guide rib 57 which engages in a uide: way58- formed in the inner side of the his furcatedmportion 55 of the foot to prevent screw with the foot so that the latter can be vertically adjusted on the turning of the screw. This foot is locked in adjusted position by means of a binding nut 62 threaded on stud 56 and in this manner the plate 54 is held in adjusted relation to the knife for throwing off the trimmings cut thereby from the looped fabric carried by the point cylinder C. This guide plate 54 has its front end curved and is provided with an upstanding right angular flange 54: at one side edge and by means of which the work is guided into the knives and cast 05 after it is cut. The flange 54: projects above the looper points of cylinder C and performs the casting oif operation. This guide M by casting off the waste from the rear of the cylinder points after the knives have cut it apart, prevents the waste from clogging the brush.

The foot 53 carries a shearing plate 01' blade 63 positioned to coact with the movable blade'19 for the cutting of the looped fabrics when trimming the same. This blade 63 is shown in the form of a flat plate having its cutting edge beveled on its lower face and over which the knife 19 is adapted to move, and is shown mounted between foot 53 and guide 5%.

The hinged mounting of the gear casing on the Y-shaped arm provides for the raising and lowering of the brush by adjusting screw 25 to adapt the brush to exert greater or less force on the fabric being cleaned, and also to compensate for wear of the bristles,

thereby greatly prolonging the life of the brush. This means of adjusting the brush also prevents any interference with the meshing of the gears.

In the operation of this device, the cleaning brush and trimming knife 19 will be simultaneously oscillated by the means above described, whereby the knife will cut the surplus in the fabrics held by the point cylinder and subsequent thereto, the brush will remove the waste threads or loops cut by the knife prior to the uniting of the fabrics to avoid formation of ridges when the fabric is sewed together.

I claim:

1. In a device of the class described, the combination of a bracket, a supporting arm mounted on said bracket and having a terminal eye at one end and a pair of branches at its other end, a cutting knife carried by said terminal eye, a support carried b said branches of the arm, said support being hingedly connected to one of said branches, means carried by the other branch for adjusting said support upon its hinge, a cleaning brush carried by said support, and means for operating the brush and knife.

2. In a device of the class described, the combination of a bracket, a supporting arm mounted on said bracket and having a terminal eye at one end and a pair of branches at its other end, a lever fulcrumed to said eye and having a depending arm carrying a trimming knife, a gear casing hinged to one of said branches, means carried by the other branch for adjusting said casin around its hinge, a brush carried by sai casing, gears in said casing for operating said brush, a fixed knife coacting with the aforesaid knife, and means for operating said gears and lever to actuate said brush and the first named knife.

3. In a device of the class described, the combination of a supporting arm, a trimming device supported by one end thereof, the other end of said arm having a pair of branches, a support hinged to one of said branches, means carried by the other branch for adjusting said support around its hinge, a brush carried by said support, and means for operating said brush and said trimming device.

4. In a device of the class described, the combination of a bracket, a trimming knife carried by said bracket, means for operating said knife, said bracket having a vertical portion, a foot, a fixed knife carried by said foot and coacting With the other knife, said foot having a vertical portion formed with a slot and in sliding contact with said vertical portion of the bracket, a clamping stud projecting from said bracket through said slot, and an adjusting screw swiveled on said vertical portion of the 'foot and threaded through said stud.

In witness whereof I have hereunto set my hand in the presence of two subscribing witnesses.

ALFRED BRUCE CHAoE, WM. WALLACE CHACE.

I Copies of this patent may be obtained for five cents each, by addressing the Commissioner of Patents, Washington, I). G. 

